Abstract 【Objective】To explore the value of tissue Doppler imaging(TDI)in diagnosing left ventricular diastolic function. 【Methods】A total of 100 hypertensive patients in our hospital from March 2015 to June 2015 were selected as the study object. The early diastolic velocity (Ea), late diastolic velocity (Aa) and Ea / Aa of hypertension patients were detected by TDI. The early diastolic flow velocity (E), late diastolic velocity (A) and E/A were detected by color Doppler flow imaging (CDFI). In addition, 50 healthy subjects were selected as the control group. 【Results】CDFI results showed that the differences of E/A (0.59±0.13) in abnormal relaxation type patients (E/A<1) or E/A (2.24±0.17) in limited abnormal diastolic function declined type patients (E/A≥2)were statistically significant (P<0.05) from E/A (1.23±0.11) in the control group . The difference of each index between pseudo-normalization (E/A1~2) patients (91.20±7.12cm/s、69.17±6.06 cm/s、1.27±0.08) and the control group patients (85.90±9.21 cm/s、67.78±8.77 cm/s、1.23±0.11) was not significant (P>0.05). TDI results showed that the differences in Ea/Aa of abnormal relaxation in diastolic function weakened type patients (0.59±0.06) and pseudo-normalization patients (0.55±0.04) had statistically significant (P<0.05) from the control group patients (1.38±0.07).The differences in Ea and Aa of limited abnormal diastolic function declined type patients (4.01±0.31 cm/s、3.17±0.24 cm/s, respectively) and control group patients (15.12±0.87 cm/s、10.12±0.53 cm/s, respectively) were statistically significant (P<0.05). 【Conclusion】Compared to color Doppler flow imaging, TDI is more sensitive to the mitral annulus movement spectrum in patients with hypertension. It can more accurately reflect the changes of mitral annulus diastolic velocity, which is valuable in the evaluation of left ventricular diastolic function.
2016, Vol. 33 
